CN206022058U - Switching mode power supply transformer magnetic core - Google Patents

Switching mode power supply transformer magnetic core Download PDF

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Publication number
CN206022058U
CN206022058U CN201620665547.8U CN201620665547U CN206022058U CN 206022058 U CN206022058 U CN 206022058U CN 201620665547 U CN201620665547 U CN 201620665547U CN 206022058 U CN206022058 U CN 206022058U
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China
Prior art keywords
magnetic core
pin
newel
power supply
switching mode
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Active
Application number
CN201620665547.8U
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Chinese (zh)
Inventor
杨美华
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NANTONG HUAXING MAGNETIC MATERIAL CO Ltd
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NANTONG HUAXING MAGNETIC MATERIAL CO Ltd
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Priority to CN201620665547.8U priority Critical patent/CN206022058U/en
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Publication of CN206022058U publication Critical patent/CN206022058U/en
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Abstract

This application discloses a kind of switching mode power supply transformer magnetic core,Including the first magnetic core and the second magnetic core,First magnetic core and the second magnetic core are disposed as flat,The both sides of the first magnetic core be respectively arranged with first in pin and second pin,First magnetic core is provided with the first newel,First newel is arranged on first in pin and second in the middle of pin,First side pin、First newel and the second side pin are arranged on the same side of the first magnetic core,The both sides of the second magnetic core be provided with the 3rd in pin and the 4th pin,Second magnetic core is provided with the second newel,Second newel is arranged on the 3rd in pin and the 4th in the middle of pin,3rd side pin、Second newel and the 4th side pin are arranged on the same side of the second magnetic core,By by the first magnetic core and the second Magnetic Core Design into flat,Increased the area of section of the first magnetic core and the second magnetic core,The resistance of coil can be reduced,Can solve the problem that core loss is big and the big problem of volume.

Description

Switching mode power supply transformer magnetic core
Technical field
The disclosure relates generally to switching mode power supply transformer field, and in particular to magnetic core field, more particularly to a kind of switch electricity Source magnetic core of transformer.
Background technology
Switching mode power supply transformer is the power transformer for adding switching tube, in circuit except the voltage of common transformer Mapping function, also has concurrently to be dielectrically separated from and is commonly used in the occasion that Switching Power Supply etc. is related to high-frequency circuit with power transmitting function.
Switching mode power supply transformer and switching tube constitute the blocking oscillator of self-excitation (or separate excitation) formula together, so as to defeated Enter DC voltage and be modulated into a high-frequency pulse voltage.Play energy transfer and conversion effect.In reverse excitation circuit, work as switch When pipe is turned on, transformer converts electrical current into into magnetic field energy and stores, and then discharges when switching tube ends.In positive activation type electricity Lu Zhong, when switching tube is turned on, input voltage is directly to load supply and energy storage in energy storage inductor.When switching tube cuts When only, then afterflow is carried out to load transmission from energy storage inductor.
In the similar electronic product such as some notebooks, flat-panel monitor, mobile battery charger, need to use Switching Power Supply, But Switching Power Supply loss at present is big, and size is big, is unsuitable for now more and more frivolous electronic equipment, and main cause is current Core loss is big and volume is big, but the volume for only reducing magnetic core is not all right, can affect the power of transformer.
Utility model content
In view of drawbacks described above of the prior art or deficiency, expect that providing a kind of little and small volume the Switching Power Supply of loss becomes Depressor magnetic core.
In a first aspect, switching mode power supply transformer magnetic core of the present utility model, including the first magnetic core and the second magnetic core, the first magnetic Core and the second magnetic core are disposed as flat, the both sides of the first magnetic core be respectively arranged with first in pin and second pin, the first magnetic Core is provided with the first newel, and the first newel is arranged on first in pin and second in the middle of pin, the first side pin, the first newel Be arranged on the same side of the first magnetic core with the second side pin, the both sides of the second magnetic core be provided with the 3rd in pin and the 4th pin, second Magnetic core is provided with the second newel, and the second newel is arranged on the 3rd in pin and the 4th in the middle of pin, the 3rd side pin, the second center Post and the 4th side pin are arranged on the same side of the second magnetic core.
According to the embodiment of the present application provide technical scheme, by by the first magnetic core and the second Magnetic Core Design into flat, The area of section of the first magnetic core and the second magnetic core is increased, on the premise of transformer efficiency is ensured, the electricity of coil can be reduced Resistance, reduces the volume of magnetic core, reduces the loss of magnetic core, can solve the problem that core loss greatly and the big problem of volume.
Description of the drawings
By reading the detailed description made by non-limiting example made with reference to the following drawings, the application other Feature, objects and advantages will become more apparent upon:
Fig. 1 is the front view of the first magnetic core of the switching mode power supply transformer magnetic core of embodiment of the present utility model;
Fig. 2 is the upward view of the first magnetic core shown in Fig. 1;
Fig. 3 is the front view of the second magnetic core of the switching mode power supply transformer magnetic core of embodiment of the present utility model;
Fig. 4 is the upward view of the second magnetic core shown in Fig. 3;
Fig. 5 is the cooperation of first magnetic core and the second magnetic core of the switching mode power supply transformer magnetic core of embodiment of the present utility model Schematic diagram.
Specific embodiment
With reference to the accompanying drawings and examples the application is described in further detail.It is understood that this place is retouched The specific embodiment that states is used only for explaining relevant utility model, rather than the restriction to the utility model.Further need exist for illustrating , for the ease of description, in accompanying drawing, illustrate only the part related to utility model.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the application in detail.
Fig. 1 to Fig. 5 is refer to, switching mode power supply transformer magnetic core of the present utility model, including the first magnetic core 10 and the second magnetic Core 20, the first magnetic core 10 and the second magnetic core 20 are disposed as flat, and the both sides of the first magnetic core 10 are respectively arranged with the first side pin 11 and the second side pin 12, the first magnetic core 10 is provided with the first newel 13, and the first newel 13 is arranged on the first side pin 11 and In the middle of two side pin 12, first at pin 11, the first newel 13 and second pin 12 be arranged on the same side of the first magnetic core 10, second The both sides of magnetic core 20 be provided with the 3rd at pin 21 and the 4th pin 22, the second magnetic core 20 is provided with the second newel 23, in second Stem 23 is arranged on the 3rd at pin 21 and the 4th in the middle of pin 22, the 3rd at pin 21, the second newel 23 and the 4th pin 22 set Put in the same side of the second magnetic core 20.
In embodiment of the present utility model, switching mode power supply transformer magnetic core of the present utility model is opened for broad-frequency high-power Power transformer is closed, the magnetic core is removed to be had outside the good characteristics such as high saturation magnetic flux density, wideband low-power consumption, it is adaptable to ultra-thin The platypelloid type transformer of type power supply.Magnetic core is highly low in flat, and sectional area is big, it is possible to decrease the magnetic core of coil resistance, while protecting The power of transformer is demonstrate,proved, the volume of transformer has been reduced, the loss of transformer has been reduced, the heating for alleviating transformer is existing As.
Further, the height of the first magnetic core 10 is 8.4-8.8mm.
Further, the height of the second magnetic core 20 is 8.4-8.8mm.
Further, the total height of the first magnetic core 10 and the second magnetic core 20 is less than 18mm.
In embodiment of the present utility model, the height of the first magnetic core is 8.4-8.8mm, and the height of the second magnetic core is 8.4- , less than 18mm, the ratio that magnetic core is highly controlled is relatively low for the total height that 8.8mm, the first magnetic core and the pairing of the second magnetic core are combined, The volume of magnetic core is reduced, generally, core volume accounts for the 65-70% of volume of transformer, so as to reduce power transformer height, subtracted The little volume of power transformer.
Further, the length of the first magnetic core 10 is 49.45-50.95mm, and width is 33.5-34.5mm.
Further, the length of the second magnetic core 20 is 49.45-50.95mm, and width is 33.5-34.5mm.
In embodiment of the present utility model, the length of the first magnetic core is 49.45-50.95mm, and width is 33.5- 34.5mm, the length of the second magnetic core is 49.45-50.95mm, and width is 33.5-34.5mm, due to magnetic core height reduction, it is ensured that After magnetic core coiling, resistance reduces simultaneously, it is ensured that the effective volume of magnetic core needs to increase, i.e. increase core cross section product.
Further, the wall thickness of the first magnetic core 10 is 2.5mm.
Further, the wall thickness of the second magnetic core 20 is 2.5mm.
In embodiment of the present utility model, the wall thickness of the first magnetic core is 2.5mm, and the wall thickness of the second magnetic core is 2.5mm, really Protect the Transformer Winding coil number of turn, it is ensured that the inductance value of transformer input impedance, the thick slimming of magnet core wall, magnetic core average wall thickness control System leaves coil making in 2.5mm for limited space.
Further, the side of the first magnetic core 10 is provided with " V " type breach 14.
In embodiment of the present utility model, as the slimming of power transformer, the packaging height of transformer are relatively low, it is The radiating effect of transformer work is improved, " V " font breach is set in the side of the first magnetic core, it is ensured that transformer radiating effect ratio Preferably.
Further, first in pin, the first newel and second side of pin be generally aligned in the same plane, the 3rd side pin, The side of two newels and the 4th side pin is generally aligned in the same plane.
In embodiment of the present utility model, first in pin, the first newel and second side of pin be located at same flat Face, the 3rd in pin, the second newel and the 4th side of pin be generally aligned in the same plane, when the first magnetic core and the second magnetic core coordinate When, it is ensured that first in pin and the 3rd pin, second in pin and the 4th pin, the first newel and the second newel can be complete Laminating, plays a part of down magnetic.
Above description is only the preferred embodiment and the explanation to institute's application technology principle of the application.People in the art Member should be appreciated that involved utility model scope in the application, however it is not limited to the particular combination of above-mentioned technical characteristic Technical scheme, while should also cover in the case where conceiving without departing from the utility model, by above-mentioned technical characteristic or its equivalent Other technical schemes that feature is combined and is formed.Such as features described above is had with (but not limited to) disclosed herein The technical scheme that the technical characteristic for having similar functions is replaced mutually and formed.

Claims (9)

1. switching mode power supply transformer magnetic core, it is characterised in that including the first magnetic core and the second magnetic core, first magnetic core and described Second magnetic core is disposed as flat, the both sides of first magnetic core be respectively arranged with first in pin and second pin, described One magnetic core is provided with the first newel, and first newel is arranged on described first in pin and described second in the middle of pin, institute State first in pin, first newel and described second pin be arranged on the same side of first magnetic core, second magnetic The both sides of core be provided with the 3rd in pin and the 4th pin, second magnetic core is provided with the second newel, second newel The described 3rd is arranged in pin and the described 4th in the middle of pin, the described 3rd in pin, second newel and the described 4th Pin is arranged on the same side of second magnetic core, and the side of first magnetic core is provided with " V " type breach.
2. switching mode power supply transformer magnetic core according to claim 1, it is characterised in that the height of first magnetic core is 8.4-8.8mm.
3. switching mode power supply transformer magnetic core according to claim 1, it is characterised in that the height of second magnetic core is 8.4-8.8mm.
4. switching mode power supply transformer magnetic core according to claim 1, it is characterised in that first magnetic core and described second The total height of magnetic core is less than 18mm.
5. switching mode power supply transformer magnetic core according to claim 1, it is characterised in that the length of first magnetic core is 49.45-50.95mm, width are 33.5-34.5mm.
6. switching mode power supply transformer magnetic core according to claim 1, it is characterised in that the length of second magnetic core is 49.45-50.95mm, width are 33.5-34.5mm.
7. switching mode power supply transformer magnetic core according to claim 1, it is characterised in that the wall thickness of first magnetic core is 2.5mm.
8. switching mode power supply transformer magnetic core according to claim 1, it is characterised in that the wall thickness of second magnetic core is 2.5mm.
9. the switching mode power supply transformer magnetic core according to any one of claim 1-8, it is characterised in that first side pin, The side of first newel and second side pin is generally aligned in the same plane, the 3rd side pin, second newel and The side of the 4th side pin is generally aligned in the same plane.
CN201620665547.8U 2016-06-29 2016-06-29 Switching mode power supply transformer magnetic core Active CN206022058U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620665547.8U CN206022058U (en) 2016-06-29 2016-06-29 Switching mode power supply transformer magnetic core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620665547.8U CN206022058U (en) 2016-06-29 2016-06-29 Switching mode power supply transformer magnetic core

Publications (1)

Publication Number Publication Date
CN206022058U true CN206022058U (en) 2017-03-15

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105895326A (en) * 2016-06-29 2016-08-24 南通华兴磁性材料有限公司 Magnetic cores of switching power supply transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105895326A (en) * 2016-06-29 2016-08-24 南通华兴磁性材料有限公司 Magnetic cores of switching power supply transformer

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